diff --git a/python/tvm/runtime/ndarray.py b/python/tvm/runtime/ndarray.py
index 27811a963993..2b9f7f9446ba 100644
--- a/python/tvm/runtime/ndarray.py
+++ b/python/tvm/runtime/ndarray.py
@@ -165,9 +165,18 @@ def copyfrom(self, source_array):
                     source_array.shape, shape
                 )
             )
-        source_array = np.ascontiguousarray(
-            source_array, dtype="uint16" if dtype == "bfloat16" else dtype
+        numpy_str_map = DataType.NUMPY2STR
+        np_dtype_str = (
+            numpy_str_map[source_array.dtype]
+            if source_array.dtype in numpy_str_map
+            else str(source_array.dtype)
         )
+        if (not source_array.flags["C_CONTIGUOUS"]) or (
+            dtype == "bfloat16" or dtype != np_dtype_str
+        ):
+            source_array = np.ascontiguousarray(
+                source_array, dtype="uint16" if dtype == "bfloat16" else dtype
+            )
         assert source_array.flags["C_CONTIGUOUS"]
         data = source_array.ctypes.data_as(ctypes.c_void_p)
         nbytes = ctypes.c_size_t(source_array.size * source_array.dtype.itemsize)